Jesus has only begun His ministry.

Background: Originally this book had no title, but since the middle of the second century, it has been known as The Acts of the Apostles -- probably because the apostles are mentioned in verse 2 and named in verse 13. The book actually describes the acts of Jesus by the Holy Spirit through His followers.
The Author: Luke was a single Syrian physician from Antioch who accompanied Paul until his martyrdom and died himself at age 84. Luke probably wrote Acts about A.D. 62-64, toward the end of Paul’s first imprisonment in Rome, where the book abruptly ends.
The Purpose: To help a man named Theophilus and others see the truth about what Jesus did and taught and how the church spread throughout the Roman world (Luke 1:3-4; Acts 1:8). Theophilus was probably a Roman official because of the title "most excellent" which Luke uses only for Roman officials and governors (see Acts 23:26; 26:25).

Insights to better understand the book of Acts

The book of Acts picks up where Luke leaves off - Acts 1:2; Luke 24:50
Acts is a transitional book, showing how the worship of God moved from the Jewish temple to the acceptance of Gentiles that believe in the Jewish Messiah and finally to a predominately Gentile church spread throughout the Roman Empire.
The main message centers on the resurrection of Jesus from the dead. Acts 1:3; 26:7-8

The sovereignty of God in the founding of His church and the spread of the gospel
The power of the Holy Spirit given to all who believe in Jesus Christ
The importance of prayer in the life of the church
The importance of communicating God’s Word
The importance of mission to all peoples
The reality of opposition and suffering in the spread of the gospel
The life and organization of the church – God’s new community of followers

The witness in Jerusalem—primarily to Jews - Chapters 1-8
The witness in Judea and Samaria—including the first Gentiles - Chapters 8 -11
The witness to the remotest parts of the earth—primarily to Gentiles - Chapters 11- 28

Jesus’ ministry is to bring salvation to a lost human race. Acts 1:3; John 1:29; Luke 19:10
Jesus continues His work through His followers. Matthew 28:18-19
Jesus works through chosen people. Acts 1:2
Jesus works through obedient followers. Acts 1:2

Jesus works through Spirit-filled followers. Acts 1:8; 1 Corinthians 12:13; Ephesians 5:18; Galatians 5:25
Jesus works through people from every walk of life and racial background. Acts 10:34-35

Are you a follower that Jesus is continuing His work through?